Low milk supply

I just need to vent for a moment. One month ago my beautiful little angel was born I wanted to strictly breastfeed I knew that from the moment I found out I was pregnant but that didn't go as planned and I had to start supplementing her at 5 days after over 24 hours without a wet diaper and constant crying . I figured it was just taking sometime for my supply to come in and it would increase in a couple days I kept breastfeeding every time she was hungry and would give her a little formula after if she was still hungry but the hardest part of this was all the reaction i have gotten from nurses and lactation consultants and some friends it makes me so frustrated when they first thing they assume is I just gave up and make all sorts of comments on what I did wrong and what I should do different I'm so sick of other people offering me their advice based on their situation when they dont kno what i have gone through and how much i hated giving my baby formula and how bad i feel that my body wont produce enough for her .don't tell me I shouldn't be giving my baby formula and that she doesn't need that much milk! I may be a first time mom but I can tell when something is wrong with my baby! And when she is hungry and not getting enough to eat . I shouldn't have to feel worse about my low milk supply from other people so my point is I just wish people would be more considerate about what they say when u don't know the mothers situation and what they are going through . OK I feel better now . .